20235212454 has 16 divisors (see below), whose sum is σ = 40479086592. Its totient is φ = 6743627208.

The previous prime is 20235212453. The next prime is 20235212461. The reversal of 20235212454 is 45421253202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235212453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330334 + ... + 386769.

It is an arithmetic number, because the mean of its divisors is an integer number (2529942912).

Almost surely, 2^20235212454 is an apocalyptic number.

20235212454 is an abundant number, since it is smaller than the sum of its proper divisors (20243874138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20235212454 is a wasteful number, since it uses less digits than its factorization.

20235212454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721811.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20235212454 its reverse (45421253202), we get a palindrome (65656465656).

The spelling of 20235212454 in words is "twenty billion, two hundred thirty-five million, two hundred twelve thousand, four hundred fifty-four".